Just did 4th flush and wonderin' what people do to keep the many, many bowel movements from hurting their "hoop" (lol). I've had this problem and found a solution. It is using my 15 month old daughter's sensitive baby wipes instead of using toilet paper. No irritation whatsoever. hope this helps anyone with the same problem.
Had hotfire burning the first time, that did disapate with each flush thereafter. THEN came the flush from hell, reckon that layer had some sort of toxin that burned like wildfire! I think it depends on what the toxin you're eliminating that flush might be.
Baby wipes are great for wiping but in between visits to the toilet, I found that putting cornstarch on a warm damp washcloth and patting it on really takes the sting out and heals it fast. This is a very old recipe for this problem.